Creating nfs RGW export makes nfs-gnaesha server in crash loop

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Hi,

This is running Quincy 17.2.5 deployed by rook on k8s. RGW nfs export will crash Ganesha server pod. CephFS export works just fine. Here are steps of it:
1, create export:
bash-4.4$ ceph nfs export create rgw --cluster-id nfs4rgw --pseudo-path /bucketexport --bucket testbk
{
    "bind": "/bucketexport",
    "path": "testbk",
    "cluster": "nfs4rgw",
    "mode": "RW",
    "squash": "none"
}

2, check pods status afterwards:
rook-ceph-nfs-nfs1-a-679fdb795-82tcx                      2/2     Running     0          4h3m
rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42                  1/2     Error       2          4h6m

3, check failing pod’s logs:

11/01/2023 08:11:53 : epoch 63be6f49 : rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42 : nfs-ganesha-1[main] nfs_start_grace :STATE :EVENT :NFS Server Now IN GRACE, duration 90
11/01/2023 08:11:54 : epoch 63be6f49 : rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42 : nfs-ganesha-1[main] nfs_start_grace :STATE :EVENT :grace reload client info completed from backend
11/01/2023 08:11:54 : epoch 63be6f49 : rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42 : nfs-ganesha-1[main] nfs_try_lift_grace :STATE :EVENT :check grace:reclaim complete(0) clid count(0)
11/01/2023 08:11:57 : epoch 63be6f49 : rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42 : nfs-ganesha-1[main] nfs_lift_grace_locked :STATE :EVENT :NFS Server Now NOT IN GRACE
11/01/2023 08:11:57 : epoch 63be6f49 : rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42 : nfs-ganesha-1[main] export_defaults_commit :CONFIG :INFO :Export Defaults now (options=03303002/00080000               ,     ,    ,               ,               ,         ,                ,                , expire=       0)
2023-01-11T08:11:57.853+0000 7f59dac7c200 -1 auth: unable to find a keyring on /var/lib/ceph/radosgw/ceph-admin/keyring: (2) No such file or directory
2023-01-11T08:11:57.853+0000 7f59dac7c200 -1 AuthRegistry(0x56476817a480) no keyring found at /var/lib/ceph/radosgw/ceph-admin/keyring, disabling cephx
2023-01-11T08:11:57.855+0000 7f59dac7c200 -1 auth: unable to find a keyring on /var/lib/ceph/radosgw/ceph-admin/keyring: (2) No such file or directory
2023-01-11T08:11:57.855+0000 7f59dac7c200 -1 AuthRegistry(0x7ffe4d092c90) no keyring found at /var/lib/ceph/radosgw/ceph-admin/keyring, disabling cephx
2023-01-11T08:11:57.856+0000 7f5987537700 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [1]
2023-01-11T08:11:57.856+0000 7f5986535700 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [1]
2023-01-11T08:12:00.861+0000 7f5986d36700 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [1]
2023-01-11T08:12:00.861+0000 7f59dac7c200 -1 monclient: authenticate NOTE: no keyring found; disabled cephx authentication
failed to fetch mon config (--no-mon-config to skip)

4, delete the export:
ceph nfs export delete nfs4rgw /bucketexport

Ganesha servers go back normal:
rook-ceph-nfs-nfs1-a-679fdb795-82tcx                      2/2     Running     0          4h30m
rook-ceph-nfs-nfs4rgw-a-5c594d67dc-nlr42                  2/2     Running     10         4h33m

Any ideas to make it work?

Thanks
Ben
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